#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int even(int n);
int even(int n)
{
    if (n % 2 == 0)
    {
        return 1;
    }
    else
        return 0;
}

int main()
{
    int n;

    scanf("%d", &n);
    if (even(n))
        printf("%d is even.\n", n);
    else
        printf("%d is odd.\n", n);

    return 0;
}

